<template>
 
    
    <el-container class="homeContainer">
      <el-header>
        <div>
          <img src="../assets/heima.png" alt="">
          <span>电商后台管理系统</span>
        </div>
        <el-button type="info" @click="loginout">退出</el-button>
      </el-header>
        <el-container>
          <el-aside :width="flag ? '64px' : '200px'">
            <div class="toggle-button" @click="toggleMenu">|||</div>
              <!-- 侧边栏菜单区域  :unique-opened="true"开启折叠 :collapse="flag"控制折叠开关 都是menu的属性
               :collapse-transition="false"关闭动画效果  router开启路由功能-->
            <el-menu background-color="#333744" text-color="#fff" active-text-color="#409EFF" :unique-opened="true" 
              :collapse="flag" :collapse-transition="false" router default-active="activePath"
            >
              <!-- 一级菜单 -->
              <el-submenu :index="item.id + ''" v-for="item in menulist" :key="item.id">
                <!-- 一级菜单的模板区域 -->
                <template slot="title">
                  <!-- 图标 -->
                  <i :class="iconObj[item.id]"></i>
                  <!-- 文本 -->
                  <span>{{item.authName}}</span>
                </template>

                <!-- 二级菜单 -->
                <!-- saveNavState('/' + subItem.path)保持链接激活状态 -->
                <el-menu-item @click="saveNavState('/' + subItem.path)" :index="'/' + subItem.path" v-for="subItem in item.children" :key="subItem.id" >
                  <template slot="title">
                    <!-- 图标 -->
                    <i class="el-icon-menu"></i>
                    <!-- 文本 -->
                    <span>{{subItem.authName}}</span>
                  </template>
                </el-menu-item>
              </el-submenu>
            </el-menu>
          </el-aside>
          <el-main>
            <router-view></router-view>
          </el-main>
        </el-container>
     </el-container>
    
</template>
<script>
export default {
  data () {
    return {
      menulist: [],
      iconObj: {
        '125': 'iconfont icon-user',
        '103': 'iconfont icon-tijikongjian',
        '101': 'iconfont icon-shangpin',
        '102': 'iconfont icon-danju',
        '145': 'iconfont icon-baobiao'
      },
      flag: false,
      activePath: ''
    }
  },
  created () {
    this.getMenuList()
    this.activePath = window.sessionStorage.getItem('activePath')
  },
  methods: {
    loginout () {
      window.sessionStorage.clear()
      this.$router.push('/login')
    },
    //获取菜单列表
    async getMenuList () {

      // 教程写法
      // const { data: res } = await this.$http.get('menus')
      // if (res.meta.status !== 200) return this.$message.error(res.meta.msg)
      // this.menulist = res.data

      await this.$http.get('menus').then(result=> {      
        if(result.status !==200) return this.$message.error(result.data.meta.msg)
        this.menulist = result.data.data
        
      })
    },
    //折叠菜单
    toggleMenu () {
      this.flag = !this.flag
    },
    //保存链接的激活状态
    saveNavState (activePath) {
      window.sessionStorage.setItem('activePath', activePath)
      this.activePath = activePath
    }
    

  }
}
</script>
<style lang='scss' scoped>
.homeContainer{
  height: 100%;
  .el-header{
    background-color: #373d41;
    display: flex;
    justify-content: space-between;
    padding-left: 0;
    align-items: center;
    color: #fff;
    font-size: 20px;
    div{
      display: flex;
      align-items: center;
    }
    span{
      margin-left: 15px;
    }
  }

  .el-aside{
    background-color: #333744;
    .el-menu{
      border-right: none;
    }
  }
  .el-main{
    background-color: #eaedf1;
  }
}
.iconfont{
  margin-right: 10px;
}
.toggle-button{
  background-color: #4A5064;
  font-size: 10px;
  line-height: 24px;
  color: #fff;
  letter-spacing: 0.2em;
  text-align: center;
  cursor: pointer;
}
</style>